Raccoom.Windows.Forms.TreeViewFolderBrowser.ShowFolder C# (CSharp) Method

        public void ShowFolder(string directoryPath)
        {
            if ((directoryPath == null) || (directoryPath == "") || (directoryPath == string.Empty)) return;

              bool requestNetwork = directoryPath.StartsWith(@"\\") ? true : false;

              // start search at root node
              TreeNodeCollection nodeCol = _dataProvider.RequestDriveCollection(_helper, requestNetwork);
              //
              if (!Directory.Exists(directoryPath) || nodeCol == null) return;
              //
              DirectoryInfo dirInfo = new DirectoryInfo(directoryPath);
              // get path tokens
              ArrayList dirs = new ArrayList();
              dirs.Add(dirInfo.FullName);
              //
              while (dirInfo.Parent != null)
              {
            dirs.Add(dirInfo.Parent.FullName);
            //
            dirInfo = dirInfo.Parent;
              }
              // For network we should add also the server tp the dir list
              if (requestNetwork)
              {
            dirs.Add(dirInfo.FullName.Substring(0, dirInfo.FullName.LastIndexOf(@"\")));
              }

              // try to expand all path tokens
              Cursor.Current = Cursors.WaitCursor;
              BeginUpdate();
              // load on demand was not fired till now
              if (nodeCol.Count == 1 && ((TreeNodePath)nodeCol[0]).Path == null)
              {
            nodeCol[0].Parent.Expand();
              }
              try
              {
            //
            for (int i = dirs.Count - 1; i >= 0; i--)
            {
              foreach (TreeNodePath n in nodeCol)
              {
            if (n.Path.ToLower().CompareTo(dirs[i].ToString().ToLower()) == 0)
            {
              nodeCol = n.Nodes;
              if (i == 0)
              {
                n.EnsureVisible();
                SelectedNode = n;
              }
              else
              {
                n.Expand();
              }
              break;
            }
              }
            }
              }
              catch (Exception e)
              {
            throw e;
              }
              finally
              {
            EndUpdate();
            Cursor.Current = Cursors.Default;
              }
        }